1920s Filigree Necklace w/ Diamond Glass Camphor in 10k.  This amazing Art Deco pendant necklace features a .03 carat single cut diamond set in 10 karat white gold over a piece of camphor glass. The beautifully frosted camphor glass has grooves carved inside the white gold borders with ornate filigree details. The chain is 17 inches in length and completes this delightful vintage pendant necklace.